Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * boot.c - Architecture-Specific Low-Level ACPI Boot Support |
| 3 | * |
| 4 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
| 5 | * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com> |
| 6 | * |
| 7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 24 | */ |
| 25 | |
| 26 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/acpi.h> |
Thomas Gleixner | d66bea5 | 2007-02-16 01:27:57 -0800 | [diff] [blame] | 28 | #include <linux/acpi_pmtmr.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/efi.h> |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 30 | #include <linux/cpumask.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/module.h> |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 32 | #include <linux/dmi.h> |
Nick Piggin | b33fa1f | 2005-10-01 02:34:42 +1000 | [diff] [blame] | 33 | #include <linux/irq.h> |
adurbin@google.com | f0f4c34 | 2006-09-26 10:52:39 +0200 | [diff] [blame] | 34 | #include <linux/bootmem.h> |
| 35 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| 37 | #include <asm/pgtable.h> |
| 38 | #include <asm/io_apic.h> |
| 39 | #include <asm/apic.h> |
| 40 | #include <asm/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <asm/mpspec.h> |
| 42 | |
Adrian Bunk | e8924ac | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 43 | static int __initdata acpi_force = 0; |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 44 | |
Andi Kleen | df3bb57 | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 45 | #ifdef CONFIG_ACPI |
| 46 | int acpi_disabled = 0; |
| 47 | #else |
| 48 | int acpi_disabled = 1; |
| 49 | #endif |
| 50 | EXPORT_SYMBOL(acpi_disabled); |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #ifdef CONFIG_X86_64 |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <asm/proto.h> |
| 55 | |
Linus Torvalds | 637029c | 2006-02-27 20:41:56 -0800 | [diff] [blame] | 56 | static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; } |
| 57 | |
| 58 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 59 | #else /* X86 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | #ifdef CONFIG_X86_LOCAL_APIC |
| 62 | #include <mach_apic.h> |
| 63 | #include <mach_mpparse.h> |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 64 | #endif /* CONFIG_X86_LOCAL_APIC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 66 | #endif /* X86 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | #define BAD_MADT_ENTRY(entry, end) ( \ |
| 69 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 70 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
| 72 | #define PREFIX "ACPI: " |
| 73 | |
Andrew Morton | 90d5390 | 2006-11-02 22:07:18 -0800 | [diff] [blame] | 74 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 75 | int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | int acpi_ht __initdata = 1; /* enable HT */ |
| 77 | |
| 78 | int acpi_lapic; |
| 79 | int acpi_ioapic; |
| 80 | int acpi_strict; |
| 81 | EXPORT_SYMBOL(acpi_strict); |
| 82 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 83 | u8 acpi_sci_flags __initdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | int acpi_sci_override_gsi __initdata; |
| 85 | int acpi_skip_timer_override __initdata; |
Andi Kleen | fa18f47 | 2006-11-14 16:57:46 +0100 | [diff] [blame] | 86 | int acpi_use_timer_override __initdata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
| 88 | #ifdef CONFIG_X86_LOCAL_APIC |
| 89 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; |
| 90 | #endif |
| 91 | |
| 92 | #ifndef __HAVE_ARCH_CMPXCHG |
| 93 | #warning ACPI uses CMPXCHG, i486 and later hardware |
| 94 | #endif |
| 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | /* -------------------------------------------------------------------------- |
| 97 | Boot-time Configuration |
| 98 | -------------------------------------------------------------------------- */ |
| 99 | |
| 100 | /* |
| 101 | * The default interrupt routing model is PIC (8259). This gets |
Simon Arlott | 27b46d7 | 2007-10-20 01:13:56 +0200 | [diff] [blame] | 102 | * overridden if IOAPICs are enumerated (below). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 104 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | #ifdef CONFIG_X86_64 |
| 107 | |
| 108 | /* rely on all ACPI tables being in the direct mapping */ |
| 109 | char *__acpi_map_table(unsigned long phys_addr, unsigned long size) |
| 110 | { |
| 111 | if (!phys_addr || !size) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 112 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Andi Kleen | 7a4a76c | 2006-01-11 22:43:39 +0100 | [diff] [blame] | 114 | if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | return __va(phys_addr); |
| 116 | |
| 117 | return NULL; |
| 118 | } |
| 119 | |
| 120 | #else |
| 121 | |
| 122 | /* |
| 123 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, |
| 124 | * to map the target physical address. The problem is that set_fixmap() |
| 125 | * provides a single page, and it is possible that the page is not |
| 126 | * sufficient. |
| 127 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, |
| 128 | * i.e. until the next __va_range() call. |
| 129 | * |
| 130 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* |
| 131 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and |
| 132 | * count idx down while incrementing the phys address. |
| 133 | */ |
| 134 | char *__acpi_map_table(unsigned long phys, unsigned long size) |
| 135 | { |
| 136 | unsigned long base, offset, mapped_size; |
| 137 | int idx; |
| 138 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 139 | if (phys + size < 8 * 1024 * 1024) |
| 140 | return __va(phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
| 142 | offset = phys & (PAGE_SIZE - 1); |
| 143 | mapped_size = PAGE_SIZE - offset; |
| 144 | set_fixmap(FIX_ACPI_END, phys); |
| 145 | base = fix_to_virt(FIX_ACPI_END); |
| 146 | |
| 147 | /* |
| 148 | * Most cases can be covered by the below. |
| 149 | */ |
| 150 | idx = FIX_ACPI_END; |
| 151 | while (mapped_size < size) { |
| 152 | if (--idx < FIX_ACPI_BEGIN) |
| 153 | return NULL; /* cannot handle this */ |
| 154 | phys += PAGE_SIZE; |
| 155 | set_fixmap(idx, phys); |
| 156 | mapped_size += PAGE_SIZE; |
| 157 | } |
| 158 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 159 | return ((unsigned char *)base + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | } |
| 161 | #endif |
| 162 | |
| 163 | #ifdef CONFIG_PCI_MMCONFIG |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 164 | /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */ |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 165 | struct acpi_mcfg_allocation *pci_mmcfg_config; |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 166 | int pci_mmcfg_config_num; |
| 167 | |
Alexey Starikovskiy | ceb6c46 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 168 | int __init acpi_parse_mcfg(struct acpi_table_header *header) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | { |
| 170 | struct acpi_table_mcfg *mcfg; |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 171 | unsigned long i; |
| 172 | int config_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Alexey Starikovskiy | ceb6c46 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 174 | if (!header) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | return -EINVAL; |
| 176 | |
Alexey Starikovskiy | ceb6c46 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 177 | mcfg = (struct acpi_table_mcfg *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 179 | /* how many config structures do we have */ |
| 180 | pci_mmcfg_config_num = 0; |
Alexey Starikovskiy | ceb6c46 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 181 | i = header->length - sizeof(struct acpi_table_mcfg); |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 182 | while (i >= sizeof(struct acpi_mcfg_allocation)) { |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 183 | ++pci_mmcfg_config_num; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 184 | i -= sizeof(struct acpi_mcfg_allocation); |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 185 | }; |
| 186 | if (pci_mmcfg_config_num == 0) { |
| 187 | printk(KERN_ERR PREFIX "MMCONFIG has no entries\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | return -ENODEV; |
| 189 | } |
| 190 | |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 191 | config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config); |
| 192 | pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL); |
| 193 | if (!pci_mmcfg_config) { |
| 194 | printk(KERN_WARNING PREFIX |
| 195 | "No memory for MCFG config tables\n"); |
| 196 | return -ENOMEM; |
| 197 | } |
| 198 | |
Alexey Starikovskiy | ad363f8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 199 | memcpy(pci_mmcfg_config, &mcfg[1], config_size); |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 200 | for (i = 0; i < pci_mmcfg_config_num; ++i) { |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 201 | if (pci_mmcfg_config[i].address > 0xFFFFFFFF) { |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 202 | printk(KERN_ERR PREFIX |
| 203 | "MMCONFIG not in low 4GB of memory\n"); |
Konrad Rzeszutek | acc7c2e | 2006-06-15 12:08:30 -0400 | [diff] [blame] | 204 | kfree(pci_mmcfg_config); |
| 205 | pci_mmcfg_config_num = 0; |
Greg Kroah-Hartman | 5454939 | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 206 | return -ENODEV; |
| 207 | } |
| 208 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
| 210 | return 0; |
| 211 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 212 | #endif /* CONFIG_PCI_MMCONFIG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
| 214 | #ifdef CONFIG_X86_LOCAL_APIC |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 215 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 217 | struct acpi_table_madt *madt = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 219 | if (!cpu_has_apic) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | return -EINVAL; |
| 221 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 222 | madt = (struct acpi_table_madt *)table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | if (!madt) { |
| 224 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); |
| 225 | return -ENODEV; |
| 226 | } |
| 227 | |
Alexey Starikovskiy | ad363f8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 228 | if (madt->address) { |
| 229 | acpi_lapic_addr = (u64) madt->address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
| 231 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", |
Alexey Starikovskiy | ad363f8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 232 | madt->address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 236 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | return 0; |
| 238 | } |
| 239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 241 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 243 | struct acpi_madt_local_apic *processor = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 245 | processor = (struct acpi_madt_local_apic *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | |
| 247 | if (BAD_MADT_ENTRY(processor, end)) |
| 248 | return -EINVAL; |
| 249 | |
| 250 | acpi_table_print_madt_entry(header); |
| 251 | |
Ashok Raj | 7f66ae4 | 2006-02-03 21:51:50 +0100 | [diff] [blame] | 252 | /* |
| 253 | * We need to register disabled CPU as well to permit |
| 254 | * counting disabled CPUs. This allows us to size |
| 255 | * cpus_possible_map more accurately, to permit |
| 256 | * to not preallocating memory for all NR_CPUS |
| 257 | * when we use CPU hotplug. |
| 258 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 259 | mp_register_lapic(processor->id, /* APIC ID */ |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 260 | processor->lapic_flags & ACPI_MADT_ENABLED); /* Enabled? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 266 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 267 | const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 269 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 271 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
| 273 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) |
| 274 | return -EINVAL; |
| 275 | |
| 276 | acpi_lapic_addr = lapic_addr_ovr->address; |
| 277 | |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 282 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 284 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 286 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | |
| 288 | if (BAD_MADT_ENTRY(lapic_nmi, end)) |
| 289 | return -EINVAL; |
| 290 | |
| 291 | acpi_table_print_madt_entry(header); |
| 292 | |
| 293 | if (lapic_nmi->lint != 1) |
| 294 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); |
| 295 | |
| 296 | return 0; |
| 297 | } |
| 298 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 299 | #endif /*CONFIG_X86_LOCAL_APIC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Len Brown | 8466361 | 2005-08-24 12:09:07 -0400 | [diff] [blame] | 301 | #ifdef CONFIG_X86_IO_APIC |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
| 303 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 304 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 306 | struct acpi_madt_io_apic *ioapic = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 308 | ioapic = (struct acpi_madt_io_apic *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
| 310 | if (BAD_MADT_ENTRY(ioapic, end)) |
| 311 | return -EINVAL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 312 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | acpi_table_print_madt_entry(header); |
| 314 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 315 | mp_register_ioapic(ioapic->id, |
| 316 | ioapic->address, ioapic->global_irq_base); |
| 317 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return 0; |
| 319 | } |
| 320 | |
| 321 | /* |
| 322 | * Parse Interrupt Source Override for the ACPI SCI |
| 323 | */ |
Len Brown | e82c354 | 2006-12-21 01:29:59 -0500 | [diff] [blame] | 324 | static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { |
| 326 | if (trigger == 0) /* compatible SCI trigger is level */ |
| 327 | trigger = 3; |
| 328 | |
| 329 | if (polarity == 0) /* compatible SCI polarity is low */ |
| 330 | polarity = 3; |
| 331 | |
| 332 | /* Command-line over-ride via acpi_sci= */ |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 333 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
| 334 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 336 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
| 337 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
| 339 | /* |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 340 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | * If GSI is < 16, this will update its flags, |
| 342 | * else it will create a new mp_irqs[] entry. |
| 343 | */ |
Len Brown | 7bdd21c | 2006-12-02 02:27:46 -0500 | [diff] [blame] | 344 | mp_override_legacy_irq(gsi, polarity, trigger, gsi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | /* |
| 347 | * stash over-ride to indicate we've been here |
Alexey Starikovskiy | cee324b | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 348 | * and for later update of acpi_gbl_FADT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | */ |
Len Brown | 7bdd21c | 2006-12-02 02:27:46 -0500 | [diff] [blame] | 350 | acpi_sci_override_gsi = gsi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | return; |
| 352 | } |
| 353 | |
| 354 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 355 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 356 | const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 358 | struct acpi_madt_interrupt_override *intsrc = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 360 | intsrc = (struct acpi_madt_interrupt_override *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
| 362 | if (BAD_MADT_ENTRY(intsrc, end)) |
| 363 | return -EINVAL; |
| 364 | |
| 365 | acpi_table_print_madt_entry(header); |
| 366 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 367 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
Len Brown | 7bdd21c | 2006-12-02 02:27:46 -0500 | [diff] [blame] | 368 | acpi_sci_ioapic_setup(intsrc->global_irq, |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 369 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
| 370 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | if (acpi_skip_timer_override && |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 375 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 376 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
| 377 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | } |
| 379 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 380 | mp_override_legacy_irq(intsrc->source_irq, |
| 381 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
| 382 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, |
| 383 | intsrc->global_irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
| 385 | return 0; |
| 386 | } |
| 387 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 389 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 391 | struct acpi_madt_nmi_source *nmi_src = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 393 | nmi_src = (struct acpi_madt_nmi_source *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
| 395 | if (BAD_MADT_ENTRY(nmi_src, end)) |
| 396 | return -EINVAL; |
| 397 | |
| 398 | acpi_table_print_madt_entry(header); |
| 399 | |
| 400 | /* TBD: Support nimsrc entries? */ |
| 401 | |
| 402 | return 0; |
| 403 | } |
| 404 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 405 | #endif /* CONFIG_X86_IO_APIC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | /* |
| 408 | * acpi_pic_sci_set_trigger() |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 409 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | * use ELCR to set PIC-mode trigger type for SCI |
| 411 | * |
| 412 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's |
| 413 | * it may require Edge Trigger -- use "acpi_sci=edge" |
| 414 | * |
| 415 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers |
| 416 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. |
Simon Arlott | 27b46d7 | 2007-10-20 01:13:56 +0200 | [diff] [blame] | 417 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
| 418 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | */ |
| 420 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 421 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | { |
| 423 | unsigned int mask = 1 << irq; |
| 424 | unsigned int old, new; |
| 425 | |
| 426 | /* Real old ELCR mask */ |
| 427 | old = inb(0x4d0) | (inb(0x4d1) << 8); |
| 428 | |
| 429 | /* |
Simon Arlott | 27b46d7 | 2007-10-20 01:13:56 +0200 | [diff] [blame] | 430 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | * since we will set it correctly as we enable the PCI irq |
| 432 | * routing. |
| 433 | */ |
| 434 | new = acpi_noirq ? old : 0; |
| 435 | |
| 436 | /* |
| 437 | * Update SCI information in the ELCR, it isn't in the PCI |
| 438 | * routing tables.. |
| 439 | */ |
| 440 | switch (trigger) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 441 | case 1: /* Edge - clear */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | new &= ~mask; |
| 443 | break; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 444 | case 3: /* Level - set */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | new |= mask; |
| 446 | break; |
| 447 | } |
| 448 | |
| 449 | if (old == new) |
| 450 | return; |
| 451 | |
| 452 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); |
| 453 | outb(new, 0x4d0); |
| 454 | outb(new >> 8, 0x4d1); |
| 455 | } |
| 456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
| 458 | { |
Eric W. Biederman | f023d76 | 2006-10-04 02:16:52 -0700 | [diff] [blame] | 459 | *irq = gsi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | return 0; |
| 461 | } |
| 462 | |
Kenji Kaneshige | 1f3a6a1 | 2005-07-28 14:42:00 -0400 | [diff] [blame] | 463 | /* |
| 464 | * success: return IRQ number (>=0) |
| 465 | * failure: return < 0 |
| 466 | */ |
Len Brown | cb65469 | 2005-12-28 02:43:51 -0500 | [diff] [blame] | 467 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | { |
| 469 | unsigned int irq; |
| 470 | unsigned int plat_gsi = gsi; |
| 471 | |
| 472 | #ifdef CONFIG_PCI |
| 473 | /* |
| 474 | * Make sure all (legacy) PCI IRQs are set as level-triggered. |
| 475 | */ |
| 476 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { |
| 477 | extern void eisa_set_level_irq(unsigned int irq); |
| 478 | |
Len Brown | cb65469 | 2005-12-28 02:43:51 -0500 | [diff] [blame] | 479 | if (triggering == ACPI_LEVEL_SENSITIVE) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 480 | eisa_set_level_irq(gsi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | } |
| 482 | #endif |
| 483 | |
| 484 | #ifdef CONFIG_X86_IO_APIC |
| 485 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { |
Len Brown | cb65469 | 2005-12-28 02:43:51 -0500 | [diff] [blame] | 486 | plat_gsi = mp_register_gsi(gsi, triggering, polarity); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | } |
| 488 | #endif |
| 489 | acpi_gsi_to_irq(plat_gsi, &irq); |
| 490 | return irq; |
| 491 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | EXPORT_SYMBOL(acpi_register_gsi); |
| 494 | |
| 495 | /* |
| 496 | * ACPI based hotplug support for CPU |
| 497 | */ |
| 498 | #ifdef CONFIG_ACPI_HOTPLUG_CPU |
Sam Ravnborg | 009cbad | 2008-02-01 17:49:42 +0100 | [diff] [blame] | 499 | |
| 500 | static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | { |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 502 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 503 | union acpi_object *obj; |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 504 | struct acpi_madt_local_apic *lapic; |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 505 | cpumask_t tmp_map, new_map; |
| 506 | u8 physid; |
| 507 | int cpu; |
| 508 | |
| 509 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
| 510 | return -EINVAL; |
| 511 | |
| 512 | if (!buffer.length || !buffer.pointer) |
| 513 | return -EINVAL; |
| 514 | |
| 515 | obj = buffer.pointer; |
| 516 | if (obj->type != ACPI_TYPE_BUFFER || |
| 517 | obj->buffer.length < sizeof(*lapic)) { |
| 518 | kfree(buffer.pointer); |
| 519 | return -EINVAL; |
| 520 | } |
| 521 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 522 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 523 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 524 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
| 525 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 526 | kfree(buffer.pointer); |
| 527 | return -EINVAL; |
| 528 | } |
| 529 | |
| 530 | physid = lapic->id; |
| 531 | |
| 532 | kfree(buffer.pointer); |
| 533 | buffer.length = ACPI_ALLOCATE_BUFFER; |
| 534 | buffer.pointer = NULL; |
| 535 | |
| 536 | tmp_map = cpu_present_map; |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 537 | mp_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 538 | |
| 539 | /* |
| 540 | * If mp_register_lapic successfully generates a new logical cpu |
| 541 | * number, then the following will get us exactly what was mapped |
| 542 | */ |
| 543 | cpus_andnot(new_map, cpu_present_map, tmp_map); |
| 544 | if (cpus_empty(new_map)) { |
| 545 | printk ("Unable to map lapic to logical cpu number\n"); |
| 546 | return -EINVAL; |
| 547 | } |
| 548 | |
| 549 | cpu = first_cpu(new_map); |
| 550 | |
| 551 | *pcpu = cpu; |
| 552 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 554 | |
Sam Ravnborg | 009cbad | 2008-02-01 17:49:42 +0100 | [diff] [blame] | 555 | /* wrapper to silence section mismatch warning */ |
| 556 | int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) |
| 557 | { |
| 558 | return _acpi_map_lsapic(handle, pcpu); |
| 559 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | EXPORT_SYMBOL(acpi_map_lsapic); |
| 561 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 562 | int acpi_unmap_lsapic(int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | { |
Mike Travis | 71fff5e | 2007-10-19 20:35:03 +0200 | [diff] [blame] | 564 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
Ashok Raj | 73fea17 | 2006-09-26 10:52:35 +0200 | [diff] [blame] | 565 | cpu_clear(cpu, cpu_present_map); |
| 566 | num_processors--; |
| 567 | |
| 568 | return (0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 570 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 572 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 574 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 575 | { |
| 576 | /* TBD */ |
| 577 | return -EINVAL; |
| 578 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 579 | |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 580 | EXPORT_SYMBOL(acpi_register_ioapic); |
| 581 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 582 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 583 | { |
| 584 | /* TBD */ |
| 585 | return -EINVAL; |
| 586 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 587 | |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 588 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
| 589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | static unsigned long __init |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 591 | acpi_scan_rsdp(unsigned long start, unsigned long length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 593 | unsigned long offset = 0; |
| 594 | unsigned long sig_len = sizeof("RSD PTR ") - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
| 596 | /* |
| 597 | * Scan all 16-byte boundaries of the physical memory region for the |
| 598 | * RSDP signature. |
| 599 | */ |
| 600 | for (offset = 0; offset < length; offset += 16) { |
Siddha, Suresh B | f6c2e33 | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 601 | if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | continue; |
| 603 | return (start + offset); |
| 604 | } |
| 605 | |
| 606 | return 0; |
| 607 | } |
| 608 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 609 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 611 | struct acpi_table_boot *sb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 613 | sb = (struct acpi_table_boot *)table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | if (!sb) { |
| 615 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); |
| 616 | return -ENODEV; |
| 617 | } |
| 618 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 619 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
| 621 | return 0; |
| 622 | } |
| 623 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | #ifdef CONFIG_HPET_TIMER |
john stultz | 2d0c87c | 2007-02-16 01:28:18 -0800 | [diff] [blame] | 625 | #include <asm/hpet.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | |
Aaron Durbin | a1dfd85 | 2007-07-21 17:11:39 +0200 | [diff] [blame] | 627 | static struct __initdata resource *hpet_res; |
| 628 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 629 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | { |
| 631 | struct acpi_table_hpet *hpet_tbl; |
| 632 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 633 | hpet_tbl = (struct acpi_table_hpet *)table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | if (!hpet_tbl) { |
| 635 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); |
| 636 | return -ENODEV; |
| 637 | } |
| 638 | |
Alexey Starikovskiy | ad363f8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 639 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
| 641 | "memory.\n"); |
| 642 | return -1; |
| 643 | } |
adurbin@google.com | f0f4c34 | 2006-09-26 10:52:39 +0200 | [diff] [blame] | 644 | |
john stultz | 2d0c87c | 2007-02-16 01:28:18 -0800 | [diff] [blame] | 645 | hpet_address = hpet_tbl->address.address; |
Thomas Gleixner | f4df73c | 2007-11-15 21:41:50 -0500 | [diff] [blame] | 646 | |
| 647 | /* |
| 648 | * Some broken BIOSes advertise HPET at 0x0. We really do not |
| 649 | * want to allocate a resource there. |
| 650 | */ |
| 651 | if (!hpet_address) { |
| 652 | printk(KERN_WARNING PREFIX |
| 653 | "HPET id: %#x base: %#lx is invalid\n", |
| 654 | hpet_tbl->id, hpet_address); |
| 655 | return 0; |
| 656 | } |
| 657 | #ifdef CONFIG_X86_64 |
| 658 | /* |
| 659 | * Some even more broken BIOSes advertise HPET at |
| 660 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add |
| 661 | * some noise: |
| 662 | */ |
| 663 | if (hpet_address == 0xfed0000000000000UL) { |
| 664 | if (!hpet_force_user) { |
| 665 | printk(KERN_WARNING PREFIX "HPET id: %#x " |
| 666 | "base: 0xfed0000000000000 is bogus\n " |
| 667 | "try hpet=force on the kernel command line to " |
| 668 | "fix it up to 0xfed00000.\n", hpet_tbl->id); |
| 669 | hpet_address = 0; |
| 670 | return 0; |
| 671 | } |
| 672 | printk(KERN_WARNING PREFIX |
| 673 | "HPET id: %#x base: 0xfed0000000000000 fixed up " |
| 674 | "to 0xfed00000.\n", hpet_tbl->id); |
| 675 | hpet_address >>= 32; |
| 676 | } |
| 677 | #endif |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 678 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
john stultz | 2d0c87c | 2007-02-16 01:28:18 -0800 | [diff] [blame] | 679 | hpet_tbl->id, hpet_address); |
adurbin@google.com | f0f4c34 | 2006-09-26 10:52:39 +0200 | [diff] [blame] | 680 | |
Aaron Durbin | a1dfd85 | 2007-07-21 17:11:39 +0200 | [diff] [blame] | 681 | /* |
| 682 | * Allocate and initialize the HPET firmware resource for adding into |
| 683 | * the resource tree during the lateinit timeframe. |
| 684 | */ |
| 685 | #define HPET_RESOURCE_NAME_SIZE 9 |
| 686 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); |
| 687 | |
| 688 | if (!hpet_res) |
| 689 | return 0; |
| 690 | |
| 691 | memset(hpet_res, 0, sizeof(*hpet_res)); |
| 692 | hpet_res->name = (void *)&hpet_res[1]; |
| 693 | hpet_res->flags = IORESOURCE_MEM; |
| 694 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", |
| 695 | hpet_tbl->sequence); |
| 696 | |
| 697 | hpet_res->start = hpet_address; |
| 698 | hpet_res->end = hpet_address + (1 * 1024) - 1; |
| 699 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | return 0; |
| 701 | } |
Aaron Durbin | a1dfd85 | 2007-07-21 17:11:39 +0200 | [diff] [blame] | 702 | |
| 703 | /* |
| 704 | * hpet_insert_resource inserts the HPET resources used into the resource |
| 705 | * tree. |
| 706 | */ |
| 707 | static __init int hpet_insert_resource(void) |
| 708 | { |
| 709 | if (!hpet_res) |
| 710 | return 1; |
| 711 | |
| 712 | return insert_resource(&iomem_resource, hpet_res); |
| 713 | } |
| 714 | |
| 715 | late_initcall(hpet_insert_resource); |
| 716 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | #else |
| 718 | #define acpi_parse_hpet NULL |
| 719 | #endif |
| 720 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 721 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | { |
Jason Davis | 90660ec | 2005-04-16 15:24:53 -0700 | [diff] [blame] | 723 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | #ifdef CONFIG_X86_PM_TIMER |
| 725 | /* detect the location of the ACPI PM Timer */ |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 726 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | /* FADT rev. 2 */ |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 728 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 729 | ACPI_ADR_SPACE_SYSTEM_IO) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | return 0; |
| 731 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 732 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
David Shaohua Li | e6e87b4 | 2005-09-21 01:35:00 -0400 | [diff] [blame] | 733 | /* |
| 734 | * "X" fields are optional extensions to the original V1.0 |
| 735 | * fields, so we must selectively expand V1.0 fields if the |
| 736 | * corresponding X field is zero. |
| 737 | */ |
| 738 | if (!pmtmr_ioport) |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 739 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | } else { |
| 741 | /* FADT rev. 1 */ |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 742 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | } |
| 744 | if (pmtmr_ioport) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 745 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
| 746 | pmtmr_ioport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | #endif |
| 748 | return 0; |
| 749 | } |
| 750 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 751 | unsigned long __init acpi_find_rsdp(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 753 | unsigned long rsdp_phys = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | |
| 755 | if (efi_enabled) { |
Bjorn Helgaas | b2c99e3 | 2006-03-26 01:37:08 -0800 | [diff] [blame] | 756 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
| 757 | return efi.acpi20; |
| 758 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
| 759 | return efi.acpi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | } |
| 761 | /* |
| 762 | * Scan memory looking for the RSDP signature. First search EBDA (low |
| 763 | * memory) paragraphs and then search upper memory (E0000-FFFFF). |
| 764 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 765 | rsdp_phys = acpi_scan_rsdp(0, 0x400); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | if (!rsdp_phys) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 767 | rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | |
| 769 | return rsdp_phys; |
| 770 | } |
| 771 | |
| 772 | #ifdef CONFIG_X86_LOCAL_APIC |
| 773 | /* |
| 774 | * Parse LAPIC entries in MADT |
| 775 | * returns 0 on success, < 0 on error |
| 776 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 777 | static int __init acpi_parse_madt_lapic_entries(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | { |
| 779 | int count; |
| 780 | |
Andi Kleen | 0fcd270 | 2006-04-11 12:54:36 +0200 | [diff] [blame] | 781 | if (!cpu_has_apic) |
| 782 | return -ENODEV; |
| 783 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 784 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
| 786 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). |
| 787 | */ |
| 788 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 789 | count = |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 790 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 791 | acpi_parse_lapic_addr_ovr, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | if (count < 0) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 793 | printk(KERN_ERR PREFIX |
| 794 | "Error parsing LAPIC address override entry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | return count; |
| 796 | } |
| 797 | |
| 798 | mp_register_lapic_address(acpi_lapic_addr); |
| 799 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 800 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, acpi_parse_lapic, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 801 | MAX_APICS); |
| 802 | if (!count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
| 804 | /* TBD: Cleanup to allow fallback to MPS */ |
| 805 | return -ENODEV; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 806 | } else if (count < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
| 808 | /* TBD: Cleanup to allow fallback to MPS */ |
| 809 | return count; |
| 810 | } |
| 811 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 812 | count = |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 813 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | if (count < 0) { |
| 815 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
| 816 | /* TBD: Cleanup to allow fallback to MPS */ |
| 817 | return count; |
| 818 | } |
| 819 | return 0; |
| 820 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 821 | #endif /* CONFIG_X86_LOCAL_APIC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | |
Len Brown | 8466361 | 2005-08-24 12:09:07 -0400 | [diff] [blame] | 823 | #ifdef CONFIG_X86_IO_APIC |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | /* |
| 825 | * Parse IOAPIC related entries in MADT |
| 826 | * returns 0 on success, < 0 on error |
| 827 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 828 | static int __init acpi_parse_madt_ioapic_entries(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | { |
| 830 | int count; |
| 831 | |
| 832 | /* |
| 833 | * ACPI interpreter is required to complete interrupt setup, |
| 834 | * so if it is off, don't enumerate the io-apics with ACPI. |
| 835 | * If MPS is present, it will handle them, |
| 836 | * otherwise the system will stay in PIC mode |
| 837 | */ |
| 838 | if (acpi_disabled || acpi_noirq) { |
| 839 | return -ENODEV; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 840 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 842 | if (!cpu_has_apic) |
Andi Kleen | d3b6a34 | 2006-04-07 19:49:39 +0200 | [diff] [blame] | 843 | return -ENODEV; |
| 844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | /* |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 846 | * if "noapic" boot option, don't look for IO-APICs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | */ |
| 848 | if (skip_ioapic_setup) { |
| 849 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 850 | "due to 'noapic' option.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | return -ENODEV; |
| 852 | } |
| 853 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 854 | count = |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 855 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 856 | MAX_IO_APICS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | if (!count) { |
| 858 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); |
| 859 | return -ENODEV; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 860 | } else if (count < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
| 862 | return count; |
| 863 | } |
| 864 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 865 | count = |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 866 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 867 | NR_IRQ_VECTORS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | if (count < 0) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 869 | printk(KERN_ERR PREFIX |
| 870 | "Error parsing interrupt source overrides entry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | /* TBD: Cleanup to allow fallback to MPS */ |
| 872 | return count; |
| 873 | } |
| 874 | |
| 875 | /* |
| 876 | * If BIOS did not supply an INT_SRC_OVR for the SCI |
| 877 | * pretend we got one so we can set the SCI flags. |
| 878 | */ |
| 879 | if (!acpi_sci_override_gsi) |
Alexey Starikovskiy | cee324b | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 880 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
| 882 | /* Fill in identity legacy mapings where no override */ |
| 883 | mp_config_acpi_legacy_irqs(); |
| 884 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 885 | count = |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 886 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 887 | NR_IRQ_VECTORS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | if (count < 0) { |
| 889 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
| 890 | /* TBD: Cleanup to allow fallback to MPS */ |
| 891 | return count; |
| 892 | } |
| 893 | |
| 894 | return 0; |
| 895 | } |
| 896 | #else |
| 897 | static inline int acpi_parse_madt_ioapic_entries(void) |
| 898 | { |
| 899 | return -1; |
| 900 | } |
Len Brown | 8466361 | 2005-08-24 12:09:07 -0400 | [diff] [blame] | 901 | #endif /* !CONFIG_X86_IO_APIC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 903 | static void __init acpi_process_madt(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | { |
| 905 | #ifdef CONFIG_X86_LOCAL_APIC |
Len Brown | 7f8f97c | 2007-02-10 21:28:03 -0500 | [diff] [blame] | 906 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | |
Len Brown | 7f8f97c | 2007-02-10 21:28:03 -0500 | [diff] [blame] | 908 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | |
| 910 | /* |
| 911 | * Parse MADT LAPIC entries |
| 912 | */ |
| 913 | error = acpi_parse_madt_lapic_entries(); |
| 914 | if (!error) { |
| 915 | acpi_lapic = 1; |
| 916 | |
Venkatesh Pallipadi | 911a62d | 2005-09-03 15:56:31 -0700 | [diff] [blame] | 917 | #ifdef CONFIG_X86_GENERICARCH |
| 918 | generic_bigsmp_probe(); |
| 919 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | /* |
| 921 | * Parse MADT IO-APIC entries |
| 922 | */ |
| 923 | error = acpi_parse_madt_ioapic_entries(); |
| 924 | if (!error) { |
| 925 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; |
| 926 | acpi_irq_balance_set(NULL); |
| 927 | acpi_ioapic = 1; |
| 928 | |
| 929 | smp_found_config = 1; |
Ingo Molnar | 3c43f03 | 2007-05-02 19:27:04 +0200 | [diff] [blame] | 930 | setup_apic_routing(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | } |
| 932 | } |
| 933 | if (error == -EINVAL) { |
| 934 | /* |
| 935 | * Dell Precision Workstation 410, 610 come here. |
| 936 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 937 | printk(KERN_ERR PREFIX |
| 938 | "Invalid BIOS MADT, disabling ACPI\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | disable_acpi(); |
| 940 | } |
| 941 | } |
| 942 | #endif |
| 943 | return; |
| 944 | } |
| 945 | |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 946 | #ifdef __i386__ |
| 947 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 948 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 949 | { |
| 950 | if (!acpi_force) { |
| 951 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", |
| 952 | d->ident); |
| 953 | acpi_noirq_set(); |
| 954 | } |
| 955 | return 0; |
| 956 | } |
| 957 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 958 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 959 | { |
| 960 | if (!acpi_force) { |
| 961 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", |
| 962 | d->ident); |
| 963 | acpi_disable_pci(); |
| 964 | } |
| 965 | return 0; |
| 966 | } |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 967 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 968 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 969 | { |
| 970 | if (!acpi_force) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 971 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 972 | disable_acpi(); |
| 973 | } else { |
| 974 | printk(KERN_NOTICE |
| 975 | "Warning: DMI blacklist says broken, but acpi forced\n"); |
| 976 | } |
| 977 | return 0; |
| 978 | } |
| 979 | |
| 980 | /* |
| 981 | * Limit ACPI to CPU enumeration for HT |
| 982 | */ |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 983 | static int __init force_acpi_ht(const struct dmi_system_id *d) |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 984 | { |
| 985 | if (!acpi_force) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 986 | printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", |
| 987 | d->ident); |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 988 | disable_acpi(); |
| 989 | acpi_ht = 1; |
| 990 | } else { |
| 991 | printk(KERN_NOTICE |
| 992 | "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); |
| 993 | } |
| 994 | return 0; |
| 995 | } |
| 996 | |
| 997 | /* |
| 998 | * If your system is blacklisted here, but you find that acpi=force |
| 999 | * works for you, please contact acpi-devel@sourceforge.net |
| 1000 | */ |
| 1001 | static struct dmi_system_id __initdata acpi_dmi_table[] = { |
| 1002 | /* |
| 1003 | * Boxes that need ACPI disabled |
| 1004 | */ |
| 1005 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1006 | .callback = dmi_disable_acpi, |
| 1007 | .ident = "IBM Thinkpad", |
| 1008 | .matches = { |
| 1009 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), |
| 1010 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), |
| 1011 | }, |
| 1012 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1013 | |
| 1014 | /* |
| 1015 | * Boxes that need acpi=ht |
| 1016 | */ |
| 1017 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1018 | .callback = force_acpi_ht, |
| 1019 | .ident = "FSC Primergy T850", |
| 1020 | .matches = { |
| 1021 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), |
| 1022 | DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), |
| 1023 | }, |
| 1024 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1025 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1026 | .callback = force_acpi_ht, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1027 | .ident = "HP VISUALIZE NT Workstation", |
| 1028 | .matches = { |
| 1029 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), |
| 1030 | DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), |
| 1031 | }, |
| 1032 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1033 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1034 | .callback = force_acpi_ht, |
| 1035 | .ident = "Compaq Workstation W8000", |
| 1036 | .matches = { |
| 1037 | DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), |
| 1038 | DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), |
| 1039 | }, |
| 1040 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1041 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1042 | .callback = force_acpi_ht, |
| 1043 | .ident = "ASUS P4B266", |
| 1044 | .matches = { |
| 1045 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), |
| 1046 | DMI_MATCH(DMI_BOARD_NAME, "P4B266"), |
| 1047 | }, |
| 1048 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1049 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1050 | .callback = force_acpi_ht, |
| 1051 | .ident = "ASUS P2B-DS", |
| 1052 | .matches = { |
| 1053 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), |
| 1054 | DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), |
| 1055 | }, |
| 1056 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1057 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1058 | .callback = force_acpi_ht, |
| 1059 | .ident = "ASUS CUR-DLS", |
| 1060 | .matches = { |
| 1061 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), |
| 1062 | DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), |
| 1063 | }, |
| 1064 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1065 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1066 | .callback = force_acpi_ht, |
| 1067 | .ident = "ABIT i440BX-W83977", |
| 1068 | .matches = { |
| 1069 | DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), |
| 1070 | DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), |
| 1071 | }, |
| 1072 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1073 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1074 | .callback = force_acpi_ht, |
| 1075 | .ident = "IBM Bladecenter", |
| 1076 | .matches = { |
| 1077 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), |
| 1078 | DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), |
| 1079 | }, |
| 1080 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1081 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1082 | .callback = force_acpi_ht, |
| 1083 | .ident = "IBM eServer xSeries 360", |
| 1084 | .matches = { |
| 1085 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), |
| 1086 | DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), |
| 1087 | }, |
| 1088 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1089 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1090 | .callback = force_acpi_ht, |
| 1091 | .ident = "IBM eserver xSeries 330", |
| 1092 | .matches = { |
| 1093 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), |
| 1094 | DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), |
| 1095 | }, |
| 1096 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1097 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1098 | .callback = force_acpi_ht, |
| 1099 | .ident = "IBM eserver xSeries 440", |
| 1100 | .matches = { |
| 1101 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), |
| 1102 | DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), |
| 1103 | }, |
| 1104 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1105 | |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1106 | /* |
| 1107 | * Boxes that need ACPI PCI IRQ routing disabled |
| 1108 | */ |
| 1109 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1110 | .callback = disable_acpi_irq, |
| 1111 | .ident = "ASUS A7V", |
| 1112 | .matches = { |
| 1113 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), |
| 1114 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), |
| 1115 | /* newer BIOS, Revision 1011, does work */ |
| 1116 | DMI_MATCH(DMI_BIOS_VERSION, |
| 1117 | "ASUS A7V ACPI BIOS Revision 1007"), |
| 1118 | }, |
| 1119 | }, |
Len Brown | 74586fc | 2007-03-08 02:48:30 -0500 | [diff] [blame] | 1120 | { |
| 1121 | /* |
| 1122 | * Latest BIOS for IBM 600E (1.16) has bad pcinum |
| 1123 | * for LPC bridge, which is needed for the PCI |
| 1124 | * interrupt links to work. DSDT fix is in bug 5966. |
| 1125 | * 2645, 2646 model numbers are shared with 600/600E/600X |
| 1126 | */ |
| 1127 | .callback = disable_acpi_irq, |
| 1128 | .ident = "IBM Thinkpad 600 Series 2645", |
| 1129 | .matches = { |
| 1130 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), |
| 1131 | DMI_MATCH(DMI_BOARD_NAME, "2645"), |
| 1132 | }, |
| 1133 | }, |
| 1134 | { |
| 1135 | .callback = disable_acpi_irq, |
| 1136 | .ident = "IBM Thinkpad 600 Series 2646", |
| 1137 | .matches = { |
| 1138 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), |
| 1139 | DMI_MATCH(DMI_BOARD_NAME, "2646"), |
| 1140 | }, |
| 1141 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1142 | /* |
| 1143 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled |
| 1144 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1145 | { /* _BBN 0 bug */ |
| 1146 | .callback = disable_acpi_pci, |
| 1147 | .ident = "ASUS PR-DLS", |
| 1148 | .matches = { |
| 1149 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), |
| 1150 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), |
| 1151 | DMI_MATCH(DMI_BIOS_VERSION, |
| 1152 | "ASUS PR-DLS ACPI BIOS Revision 1010"), |
| 1153 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") |
| 1154 | }, |
| 1155 | }, |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1156 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1157 | .callback = disable_acpi_pci, |
| 1158 | .ident = "Acer TravelMate 36x Laptop", |
| 1159 | .matches = { |
| 1160 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), |
| 1161 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), |
| 1162 | }, |
| 1163 | }, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1164 | {} |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1165 | }; |
| 1166 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1167 | #endif /* __i386__ */ |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | /* |
| 1170 | * acpi_boot_table_init() and acpi_boot_init() |
| 1171 | * called from setup_arch(), always. |
| 1172 | * 1. checksums all tables |
| 1173 | * 2. enumerates lapics |
| 1174 | * 3. enumerates io-apics |
| 1175 | * |
| 1176 | * acpi_table_init() is separate to allow reading SRAT without |
| 1177 | * other side effects. |
| 1178 | * |
| 1179 | * side effects of acpi_boot_init: |
| 1180 | * acpi_lapic = 1 if LAPIC found |
| 1181 | * acpi_ioapic = 1 if IOAPIC found |
| 1182 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; |
| 1183 | * if acpi_blacklisted() acpi_disabled = 1; |
| 1184 | * acpi_irq_model=... |
| 1185 | * ... |
| 1186 | * |
| 1187 | * return value: (currently ignored) |
| 1188 | * 0: success |
| 1189 | * !0: failure |
| 1190 | */ |
| 1191 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1192 | int __init acpi_boot_table_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | { |
| 1194 | int error; |
| 1195 | |
Andrey Panin | aea0014 | 2005-06-25 14:54:42 -0700 | [diff] [blame] | 1196 | #ifdef __i386__ |
| 1197 | dmi_check_system(acpi_dmi_table); |
| 1198 | #endif |
| 1199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | /* |
| 1201 | * If acpi_disabled, bail out |
| 1202 | * One exception: acpi=ht continues far enough to enumerate LAPICs |
| 1203 | */ |
| 1204 | if (acpi_disabled && !acpi_ht) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1205 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1207 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | * Initialize the ACPI boot-time table parser. |
| 1209 | */ |
| 1210 | error = acpi_table_init(); |
| 1211 | if (error) { |
| 1212 | disable_acpi(); |
| 1213 | return error; |
| 1214 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1216 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | |
| 1218 | /* |
| 1219 | * blacklist may disable ACPI entirely |
| 1220 | */ |
| 1221 | error = acpi_blacklisted(); |
| 1222 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | if (acpi_force) { |
| 1224 | printk(KERN_WARNING PREFIX "acpi=force override\n"); |
| 1225 | } else { |
| 1226 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); |
| 1227 | disable_acpi(); |
| 1228 | return error; |
| 1229 | } |
| 1230 | } |
| 1231 | |
| 1232 | return 0; |
| 1233 | } |
| 1234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | int __init acpi_boot_init(void) |
| 1236 | { |
| 1237 | /* |
| 1238 | * If acpi_disabled, bail out |
| 1239 | * One exception: acpi=ht continues far enough to enumerate LAPICs |
| 1240 | */ |
| 1241 | if (acpi_disabled && !acpi_ht) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1242 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1244 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | |
| 1246 | /* |
| 1247 | * set sci_int and PM timer address |
| 1248 | */ |
Alexey Starikovskiy | ceb6c46 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1249 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | |
| 1251 | /* |
| 1252 | * Process the Multiple APIC Description Table (MADT), if present |
| 1253 | */ |
| 1254 | acpi_process_madt(); |
| 1255 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1256 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | |
| 1258 | return 0; |
| 1259 | } |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 1260 | |
| 1261 | static int __init parse_acpi(char *arg) |
| 1262 | { |
| 1263 | if (!arg) |
| 1264 | return -EINVAL; |
| 1265 | |
| 1266 | /* "acpi=off" disables both ACPI table parsing and interpreter */ |
| 1267 | if (strcmp(arg, "off") == 0) { |
| 1268 | disable_acpi(); |
| 1269 | } |
| 1270 | /* acpi=force to over-ride black-list */ |
| 1271 | else if (strcmp(arg, "force") == 0) { |
| 1272 | acpi_force = 1; |
| 1273 | acpi_ht = 1; |
| 1274 | acpi_disabled = 0; |
| 1275 | } |
| 1276 | /* acpi=strict disables out-of-spec workarounds */ |
| 1277 | else if (strcmp(arg, "strict") == 0) { |
| 1278 | acpi_strict = 1; |
| 1279 | } |
| 1280 | /* Limit ACPI just to boot-time to enable HT */ |
| 1281 | else if (strcmp(arg, "ht") == 0) { |
| 1282 | if (!acpi_force) |
| 1283 | disable_acpi(); |
| 1284 | acpi_ht = 1; |
| 1285 | } |
| 1286 | /* "acpi=noirq" disables ACPI interrupt routing */ |
| 1287 | else if (strcmp(arg, "noirq") == 0) { |
| 1288 | acpi_noirq_set(); |
| 1289 | } else { |
| 1290 | /* Core will printk when we return error. */ |
| 1291 | return -EINVAL; |
| 1292 | } |
| 1293 | return 0; |
| 1294 | } |
| 1295 | early_param("acpi", parse_acpi); |
| 1296 | |
| 1297 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ |
| 1298 | static int __init parse_pci(char *arg) |
| 1299 | { |
| 1300 | if (arg && strcmp(arg, "noacpi") == 0) |
| 1301 | acpi_disable_pci(); |
| 1302 | return 0; |
| 1303 | } |
| 1304 | early_param("pci", parse_pci); |
| 1305 | |
| 1306 | #ifdef CONFIG_X86_IO_APIC |
| 1307 | static int __init parse_acpi_skip_timer_override(char *arg) |
| 1308 | { |
| 1309 | acpi_skip_timer_override = 1; |
| 1310 | return 0; |
| 1311 | } |
| 1312 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); |
Andi Kleen | fa18f47 | 2006-11-14 16:57:46 +0100 | [diff] [blame] | 1313 | |
| 1314 | static int __init parse_acpi_use_timer_override(char *arg) |
| 1315 | { |
| 1316 | acpi_use_timer_override = 1; |
| 1317 | return 0; |
| 1318 | } |
| 1319 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 1320 | #endif /* CONFIG_X86_IO_APIC */ |
| 1321 | |
| 1322 | static int __init setup_acpi_sci(char *s) |
| 1323 | { |
| 1324 | if (!s) |
| 1325 | return -EINVAL; |
| 1326 | if (!strcmp(s, "edge")) |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1327 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
| 1328 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 1329 | else if (!strcmp(s, "level")) |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1330 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
| 1331 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 1332 | else if (!strcmp(s, "high")) |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1333 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
| 1334 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 1335 | else if (!strcmp(s, "low")) |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1336 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
| 1337 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 1338 | else |
| 1339 | return -EINVAL; |
| 1340 | return 0; |
| 1341 | } |
| 1342 | early_param("acpi_sci", setup_acpi_sci); |
Andrew Morton | d0a9081 | 2006-10-20 14:30:27 -0700 | [diff] [blame] | 1343 | |
| 1344 | int __acpi_acquire_global_lock(unsigned int *lock) |
| 1345 | { |
| 1346 | unsigned int old, new, val; |
| 1347 | do { |
| 1348 | old = *lock; |
| 1349 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); |
| 1350 | val = cmpxchg(lock, old, new); |
| 1351 | } while (unlikely (val != old)); |
| 1352 | return (new < 3) ? -1 : 0; |
| 1353 | } |
| 1354 | |
| 1355 | int __acpi_release_global_lock(unsigned int *lock) |
| 1356 | { |
| 1357 | unsigned int old, new, val; |
| 1358 | do { |
| 1359 | old = *lock; |
| 1360 | new = old & ~0x3; |
| 1361 | val = cmpxchg(lock, old, new); |
| 1362 | } while (unlikely (val != old)); |
| 1363 | return old & 0x1; |
| 1364 | } |